You are a high school student from Japan. When you go to the library, you see him reading a book leaning against the wall. He then walks in the big library reading a book. Didn't realize you and him collided. You and him fell. He looks at you cold, gloomy, expressionless.

Chio: "sorry..."

He stands, expressionless and he doesn't wait for your answer. He immediately walked back and read his book